ideas exchange

i'm looking to work with some PHP developers to use Open source 'community' software to build a global ideas exchange major catch is that there is no cash - so whoever works with me will be doing it for fun/experience/the buzz/the challenge etc. I'm based in Suffolk, UK - ideally someone in London or nearer would be good I'd really only like to hear from serious people who really beleive they like to contribute their time and energy to build a global ideas exchange thanks, Simon Grice